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Oxygen Sensor Voltage Codes – Part 2

Oxygen Sensor Voltage Codes – Part 2

Nov 9, 2017 | Blogs, Featured Article, Matt Shanahan - Author, Powertrain Management, Sensors and Switches

In Part 1, we began to discuss the importance of oxygen sensor voltage codes.  Voltage codes can be caused by sensors that are bad and stuck lean or rich.  These codes can also be caused by lean or rich running conditions.  The case studies we will focus on will look at pre-cat oxygen sensor codes, both caused by parts other than the O2 sensors. 

Efficient Engine Mechanical Diagnostics 2

Efficient Engine Mechanical Diagnostics 2

Apr 6, 2017 | Blogs, Engine, Cooling and Exhaust, Matt Shanahan - Author, Powertrain Management

Engines have become very reliable in recent years, many reaching over 200,000 miles without major issues. As technicians, we replace a lot more ignition coils than timing chains.

Toyota Coil on Plug Diagnosis

Toyota Coil on Plug Diagnosis

Mar 22, 2017 | Blogs, Education, Featured Article, Matt Shanahan - Author, Powertrain Management

While Toyota and Lexus have always been known as relatively reliable vehicles, they still suffer from ignition coil failures like any other manufacturer.

Oxygen Sensor Voltage Codes – Part 1

Oxygen Sensor Voltage Codes – Part 1

Mar 16, 2017 | Blogs, Engine, Cooling and Exhaust, Featured Article, Matt Shanahan - Author, Powertrain Management, Sensors and Switches

When diagnosing oxygen sensor codes, it is extremely important to focus on the code description when determining a diagnostic path. OBDII defines 36 O2 sensor codes, and there are many more on the manufacturer side. The first step is to determine what type of code the...
Efficient Engine Mechanical Diagnostics

Efficient Engine Mechanical Diagnostics

Jan 24, 2017 | Blogs, Engine, Cooling and Exhaust, Featured Article, Matt Shanahan - Author, Powertrain Management, Sensors and Switches

Engine mechanical issues are becoming more common in our repair bays today, and they can be difficult to diagnose.  Engines are built with more valves, camshafts and complex variable valve timing systems.  All of these components fail, and there are very easy tests...

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